package org.bangumibuddy.handler;


import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.List;

public class StringListTypeHandler extends BaseTypeHandler<List<String>> {


    private static final ObjectMapper objectMapper = new ObjectMapper();

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, List<String> parameter, JdbcType jdbcType)
            throws SQLException {
        try {
            String json = objectMapper.writeValueAsString(parameter);
            ps.setString(i, json);
        } catch (JsonProcessingException e) {
            throw new SQLException("Error converting List<String> to JSON", e);
        }
    }

    @Override
    public List<String> getNullableResult(ResultSet rs, String columnName) throws SQLException {
        return parseJson(rs.getString(columnName));
    }

    @Override
    public List<String> getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        return parseJson(rs.getString(columnIndex));
    }

    @Override
    public List<String> getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        return parseJson(cs.getString(columnIndex));
    }

    private List<String> parseJson(String json) throws SQLException {
        if (json == null) {
            return null;
        }

        try {
            return objectMapper.readValue(json, List.class);
        } catch (JsonProcessingException e) {
            throw new SQLException("Error converting JSON to List<String>", e);
        }
    }
}
